It is highly likely you are referring to two very popular brands in the flooring market: (often associated with laminate and solid surface) and Amelia (a popular collection of quartz or stone), or perhaps Avanza vs. Amelia . Vademecum Per Disegnatori E Tecnici Baldassini.pdf
However, the most common comparison involving the name "Onyx" is between and Silestone (or other quartz brands). Video Curso De Guitarra Orbis Fabbri Fixed Site